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Publishing Venue

The IP.com Prior Art Database

Abstract

A method for estimating the ice thickness of free drifting floes has been devised. Presently, accurate ice thickness measurements typically require the use of instruments carried in low-altitude aircraft or the use of on-ice measurements – both of which increase personnel exposure during field operations. The method described below estimates ice thickness based on ice drift measurements, wind measurements, and an ice drift forecast model.

Country

Afghanistan

Language

English (United States)

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ABSTRACT

A method for
estimating the ice thickness of free drifting floes has been devised. Presently, accurate ice thickness
measurements typically require the use of instruments carried in low-altitude
aircraft or the use of on-ice measurements – both of which increase personnel
exposure during field operations. The
method described below estimates ice thickness based on ice drift measurements,
wind measurements, and an ice drift forecast model.

DISCLOSURE

Station
keeping of floating drilling vessels in the high-Arctic offshore region during
the nominal open water summer season and shoulder seasons will generally
involve ice management. Determining the
breakability of ice requires accurate estimates of ice thickness. Conventional methods for measuring ice
thickness typically require the use of instruments carried in low-altitude
aircraft or the use of on-ice measurements – both of which increase personnel
exposure during field operations. Thus,
a method of estimating ice thickness that mitigates risk to personnel was
desired.

The proposed
method would serve the purpose of estimating ice thickness with reduced risk to
personnel. This is accomplished by
measuring ice drift and wind velocity and using an ice drift forecast model to
then determine the ice thickness that best replicates the actual drift
path. The ice drift forecast model has
three explicit variables: ice drift, wind speed, and ice thickness. When any two variables are known, the other
variab...